Home / 12,192.40-16,824.60-6,887.20

Finding the Fourth Proportional to 12,192.40, 16,824.60 and 6,887.20

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Solution

The fourth proportional to 12,192.40, 16,824.60 and 6,887.20 is: 9,503.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.40 : 16,824.60 = 6,887.20 : x
  2. Step 2: Convert to fraction form
    12,192.40/16,824.60 = 6,887.20/x
  3. Step 3: Cross multiply
    12,192.40x = 16,824.60 × 6,887.20
  4. Step 4: Simplify right side
    12,192.40x = 115,874,385.12
  5. Step 5: Solve for x
    x = 115,874,385.12/12,192.40
  6. Step 6: Final answer
    x = 9,503.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.